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A Direct, Early Stage Guanidinylation Protocol for the Synthesis of Complex Aminoguanidine-containing Natural Products

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Published on: September 9, 2016

Acridine 0.75-hydrate.

Einat Schur¹, Joel Bernstein, Andreas Lemmerer

¹Ben Gurion University of the Negev, Beer Sheva, Israel 84105.

Acta Crystallographica. Section E, Structure Reports Online

|November 9, 2011

Summary

This summary is machine-generated.

This study details the crystal structure of acridine hydrate, revealing intricate hydrogen bonding and pi-pi interactions. These molecular interactions form unique threads and layers, contributing to the compound's crystal packing.

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Area of Science:

Crystallography
Materials Science
Organic Chemistry

Background:

Acridine is a heterocyclic aromatic compound with diverse applications.
Understanding the polymorphic system of acridine is crucial for its synthesis and application.
Crystal structure analysis provides fundamental insights into molecular interactions and material properties.

Purpose of the Study:

To elucidate the crystal structure of a novel acridine hydrate compound.
To investigate the intermolecular interactions, including hydrogen bonding and pi-pi stacking, within the crystal lattice.
To understand the formation of the observed crystal structure through molecular self-assembly.

Main Methods:

Single crystal X-ray diffraction was employed to determine the atomic arrangement.
Slow evaporation from an ethanol-water solution was used for crystal growth.
Analysis of hydrogen bonds (O-H⋯O, O-H⋯N, C-H⋯O) and pi-pi interactions was performed.

Main Results:

The asymmetric unit contains two acridine molecules (I and II) and 1.5 water molecules.
Acridine molecule II forms threads stabilized by hydrogen bonds and pi-pi interactions.
Acridine molecule I is attached to these threads via C-H⋯O hydrogen bonds, forming a complex layered structure.

Conclusions:

The crystal structure of acridine hydrate is characterized by a unique arrangement of molecular threads.
Hydrogen bonding and pi-pi interactions play critical roles in stabilizing the crystal lattice.
The study provides valuable data for understanding the solid-state behavior of acridine derivatives.